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公开(公告)号：US11180604B2
公开(公告)日：2021-11-23
申请号：US15384346
申请日：2016-12-20
Applicant: PRC-DeSoto International, Inc.
Inventor： Razmik Boghossian , James Smith
IPC: C08G18/12 , C08G18/32 , C08G18/10 , C08G18/42 , C08G18/76 , C08G18/48 , C08G18/44 , C09D175/02 , C08G18/66 , C08G18/75
Abstract: Polyurethane prepolymers having non-linear short chain diols and/or soft diisocyanates incorporated into the backbone are used to provide cured polyurethane coatings having a high hard segment content and low haze. The polyurethane prepolymers can also be used to improve the dispersion of filler in cured polyurethane compositions having a high filler loading. Cured coatings prepared from the two-part polyurethane systems meet the requirements for aerospace applications.
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2.发明申请公开(公告)号：US20180112025A1
公开(公告)日：2018-04-26
申请号：US15848387
申请日：2017-12-20
Applicant: PRC-DeSoto International, Inc.
Inventor： Razmik Boghossian , Ahmed Sharaby
CPC classification number: C08G18/12 , C07C321/14 , C08G18/10 , C08G18/1816 , C08G18/3868 , C08G18/3876 , C08G18/5024 , C08G18/65 , C08G18/758 , C08G18/7671 , C08G2190/00 , C09K3/1021 , C08G18/48
Abstract: Adducts and prepolymers comprising pendent alkyl groups are disclosed. Polythiol adducts prepared by reacting a polythiol with a ketone and urethane-extended polythiol adducts. The polythiol adducts can be terminated with isocyanate groups. Compositions comprising the isocyanate-terminated polythiol adducts, isocyanate-terminated sulfur-containing prepolymers, and diisocyanates can be combined with polyamine or polyepoxide curing agents to provide curable compositions. Cured compositions are suitable for aerospace coating and sealant applications. The compositions can also include a low specific gravity filler and, when cured, meet the requirements of aerospace sealant applications.
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Patent Agency Ranking
3.发明授权公开(公告)号：US09902799B2
公开(公告)日：2018-02-27
申请号：US14937904
申请日：2015-11-11
Applicant: PRC-DeSoto International, Inc.
Inventor： Razmik Boghossian , Ahmed Sharaby
CPC classification number: C08G18/12 , C07C321/14 , C08G18/3868 , C08G18/3876 , C08G18/65 , C08G18/7671 , C09K3/1021
Abstract: Adducts and prepolymers comprising pendent alkyl groups are disclosed. Polythiol adducts prepared by reacting a polythiol with a ketone and urethane-extended polythiol adducts. The polythiol adducts can be terminated with isocyanate groups. Compositions comprising the isocyanate-terminated polythiol adducts, isocyanate-terminated sulfur-containing prepolymers, and diisocyanates can be combined with polyamine or polyepoxide curing agents to provide curable compositions. Cured compositions are suitable for aerospace coating and sealant applications. The compositions can also include a low specific gravity filler and, when cured, meet the requirements of aerospace sealant applications.
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公开(公告)号：US20250136838A1
公开(公告)日：2025-05-01
申请号：US18834678
申请日：2023-01-27
Applicant: PRC-Desoto International, Inc.
Inventor： Razmik Boghossian , James Smith , Laxman Gurung , Renhe Lin
IPC: C09D175/12 , C08G18/12 , C08G18/32
Abstract: Isocyanate-functional polyurethane prepolymers are prepared by reacting a polymeric diol, a non-linear short chain diol, a multifunctional polyol, and a diisocyanate. Coating compositions comprising the isocyanate-functional polyurethane prepolymers and a polyamine curing agent can be used to prepare topcoats that meet the demanding performance requirements of aerospace and other applications.
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公开(公告)号：US11807707B2
公开(公告)日：2023-11-07
申请号：US17499042
申请日：2021-10-12
Applicant: PRC-DeSoto International, Inc.
Inventor： Razmik Boghossian , James Smith
IPC: C08G18/10 , C08G18/48 , C08G18/44 , C08G18/32 , C08G18/42 , C08G18/76 , C09D175/02 , C08G18/66 , C08G18/75 , C08G18/12
CPC classification number: C08G18/3206 , C08G18/10 , C08G18/12 , C08G18/3212 , C08G18/42 , C08G18/44 , C08G18/4825 , C08G18/4854 , C08G18/664 , C08G18/6674 , C08G18/758 , C08G18/7671 , C09D175/02 , C08G18/10 , C08G18/3234
Abstract: Polyurethane prepolymers having non-linear short chain diols and/or soft diisocyanates incorporated into the backbone are used to provide cured polyurethane coatings having a high hard segment content and low haze. The polyurethane prepolymers can also be used to improve the dispersion of filler in cured polyurethane compositions having a high filler loading. Cured coatings prepared from the two-part polyurethane systems meet the requirements for aerospace applications.
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公开(公告)号：US11098222B2
公开(公告)日：2021-08-24
申请号：US16026083
申请日：2018-07-03
Applicant: PRC-DeSoto International, Inc.
Inventor： Razmik Boghossian , James Smith
IPC: C09D175/02 , C09D181/02 , C08G18/77 , C08G75/045
Abstract: Isocyanate-terminated chain-extended polythioether prepolymers, compositions thereof, and methods of use thereof are disclosed. The isocyanate-terminated chain-extended polythioether prepolymers are useful in sprayable coatings and sealants and especially sprayable coatings and sealants having a high filler content.
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7.发明授权公开(公告)号：US11091582B2
公开(公告)日：2021-08-17
申请号：US15848387
申请日：2017-12-20
Applicant: PRC-DeSoto International, Inc.
Inventor： Razmik Boghossian , Ahmed Sharaby
IPC: C08G18/38 , C08G18/12 , C07C321/14 , C08G18/76 , C08G18/65 , C09K3/10 , C08G18/75 , C08G18/10 , C08G18/50 , C08G18/18
Abstract: Adducts and prepolymers comprising pendent alkyl groups are disclosed. Polythiol adducts prepared by reacting a polythiol with a ketone and urethane-extended polythiol adducts. The polythiol adducts can be terminated with isocyanate groups. Compositions comprising the isocyanate-terminated polythiol adducts, isocyanate-terminated sulfur-containing prepolymers, and diisocyanates can be combined with polyamine or polyepoxide curing agents to provide curable compositions. Cured compositions are suitable for aerospace coating and sealant applications. The compositions can also include a low specific gravity filler and, when cured, meet the requirements of aerospace sealant applications.
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